
正負數
Authored by 劉明承 劉明承
Mathematics
7th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列何者正確?
-3-2=-1
2-(-5)=2+5
5+(-3)=5-(-3)
3-(-4)=3+(-4)
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
設A代表一個數,則(-A)表示
負數
正數
0
無法確定
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
數線上表示-4、-1.25、2.7、 四個點,和原點距離最近的點是
-4
-1.25
2.7
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
合歡山上。在中午的溫度是攝氏4度,在夜晚溫度降低了9度,則此時山上的溫度是
-9
-13
-5
5
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
數線上一點A所表示的數為5,則與A相距12單位的點所表示的數為
7
-7
7或-17
-7或17
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
數線上三點A、B、C,若其表示的數分別為1、3、8,今以B為新原點,則C所代表的為
3
5
7
11
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
數線上在原點左邊,距離原點越遠的數會
越小
越大
不一定
必為正數
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